﻿
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Data.SqlClient;

namespace ConsoleTest_003
{
    class Program
    {

        static void Main(string[] args)
        {
            string connectionString = "server=.;database=sql;uid=sa;pwd=123456";
            SqlConnection sqlConnection = new SqlConnection(connectionString);

            sqlConnection.Open();

            var sqlCommandString = "select * from demo";

            SqlCommand sqlCommand = new SqlCommand(sqlCommandString, sqlConnection);

           var sdr = sqlCommand.ExecuteReader();

            Console.WriteLine("{0}\t{1}\t{2}\t{3}", "Id","Name","Age","Score");

           while (sdr.Read())
            {
                Console.WriteLine("{0}\t{1}\t{2}\t{3}",sdr["Id"],sdr["Name"],sdr["Age"],sdr["Score"]);
            }

            sqlConnection.Close();



        }
    }
}
